fix(worker): worker import.meta.url should not depends on document in iife mode

[sun0day]

Description

fix #12611

import.meta.url will be transformed to something like document.currentScript&&document.currentScript.src||new URL("a.js",document.baseURI).href in iife mode. But document is undefined in the worker context.

This PR directly transforms it to new URL('a.js', self.location.href).href

Additional context

---

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[vinayakkulkarni]

LGTM

[sapphi-red]

Suggested change

	return `new URL('${chunkId}', self.location.href).href`
	return 'self.location.href'

I just noticed that we should use self.location.href here. location.href returns the location of the worker and not the document.
https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/location

new URL('${chunkId}', self.location.href).href is be like http://localhost:4173/assets/assets/worker.js which is not correct, because chunkId is like /assets/worker.js and self.location.href is like http://localhost:4173/assets/worker.js.

[vinayakkulkarni]

Will this go in 4.2.2 ?

[tomayac]

Will this go in 4.2.2 ?

Seems like it didn't make it. I still get…

var de = document.currentScript && document.currentScript.src || new URL("assets/worker-b4ac415f.js",document.baseURI).href;

…in my code. It works fine in dev mode, but not in preview mode. Hoping for the next release.

[patak-dev]

@tomayac you can try it out on vite@4.3.0-beta.8. If no regressions are reported, it will be tagged as 4.3 stable tomorrow.

[tomayac]

Oh, amazing! Confirming that it works fine on 4.3.0-beta.8! Thank you <3!

[tien]

I'm still getting this issue on 4.3.0-beta.8. Specifically with this dependency @polkadot/api

this line here

export const packageInfo = { name: '@polkadot/x-textdecoder', path: new URL(import.meta.url).pathname, type: 'esm', version: '11.1.3' };

still get compiled to

const yw = {
  name: "@polkadot/x-textdecoder",
  path: {
    url: document.currentScript && document.currentScript.src || new URL("assets/worker-4a3b769e.js",document.baseURI).href
  } && self.location.href ? new URL(self.location.href).pathname.substring(0, new URL(self.location.href).pathname.lastIndexOf("/") + 1) : "auto",
  type: "esm",
  version: "11.1.3"
}

[patak-dev]

@tien please create a new issue with a minimal reproduction against the latest Vite version (and you can link this PR for reference). A comment on a merged PR doesn't allow us to track your problem properly